Create A Map In Scala

Create A Map In Scala. SCALA Rengen Developments Scala's Predef object offers an implicit conversion that lets you write key -> value as an alternate syntax for the pair (key, value) Thanks to that, we have direct access to a value under a given key

Syntax var map_name = collection.mutable.Map( "key1"->"value1", "key2"->"value2", Maps allow storing hierarchical application configurations for easy access across codebase.

SCALA Rengen Developments

var states = scala.collection.mutable.Map("AL" -> "Alabama") Maps also define an apply method that returns the value associated with a given key directly, without wrapping it in an Option This is an excerpt from the 1st Edition of the Scala Cookbook (partially modified for the internet)

How to Convert List to Map in Scala Delft Stack. Scala's Map is a collection of key-value pairs, where each key needs to be unique Through examples and explanations, the lesson equips students with practical skills for working.

Lesson 1 What is India like? create a Map of India table template. Note "map" because the resulting collection is not a scala Map but creates another list/iterable of tuples.but the effect is the same for the OP's purpose i wouldn't discount the simplicity but it's not as efficient as foldLeft solution, nor it's the real answer to the question "converting into a collection into a map-by-key" - Mutable maps are required when we need to add more elements to the map after declaring it